1-3c difference is all there is.
I've found paying attention to case airflow so coolers get air as close to room ambient as possible (only 2-3c warmer is very good; 5c is fine) improves component temps more than adding 2nd fan to cooler. It is not at all uncommon to find component intake air temp to be 10, 15, even 20c higher than room ambient, and every degree warmer the air is going into component translates to a degree hotter the component will be (at same fan speed). Simply put, if your cooler intake is 15c warmer than room and you optimize case airflow so it is only 5c, your component will be 10c cooler. You might find "Ways to Better Cooling" link in my sig of interest. 1st post is index, click on topic to see it. 5th topic is good place to start.